<template>
    <transition name="move">
        <div class="food" v-show="showFlag" ref="food">
           <div class="food-content">
                <div class="image-header">
                <img :src="food.image">
                <div class="back" @click="hide">
                    <span class="icon-arrow_lift"><</span>
                </div>
                </div>
                <div class="content">
                    <h1 class="title">{{food.name}}</h1>
                    <div class="detail">
                        <span class="sell-count">月售{{food.sellCount}}份</span>
                        <span class="rating">好评率{{food.rating}}%</span>
                    </div>
                    <div class="price">
                        <span class="now">¥{{food.price}}</span><span class="old" v-show="food.oldPrice">¥{{food.oldPrice}}</span>
                    </div>
                        
                    <div class="cartcontrol-wrapper">
                        <cartcontrol :food="food"></cartcontrol>
                    </div>
                    <transition name="fade">
                        <div class="buy"  @click.stop.prevent="addFirst" v-show="!food.count || food.count===0">加入购物车</div>
                    </transition>
                    </div>
                    <split v-show="food.info"></split>
                    <div class="info" v-show="food.info">
                        <h1 class="title">商品信息</h1>
                        <p class="text">{{food.info}}</p>
                    </div>
                    <split></split>
                    <div class="rating">
                        <h1 class="title">商品评价</h1>
                    <ratingselect :select-type="selectType" :only-content="onlyContent" :desc="desc" :ratings="food.ratings"></ratingselect>
                    <div class="rating-wrapper">
                        <ul v-show="food.ratings && food.ratings.length">
                            <li v-show="needShow(rating.rateType,rating.text)" v-for="rating in food.ratings" class="rating-item border-1px">
                                <div class="user">
                                    <span class="name">{{rating.username}}</span>
                                    <img class="avatar" width="12" height="12" :src="rating.avatar">
                                </div>
                                <div class="time">{{rating.rateTime | formatDate}}</div>
                                <p class="text">
                                    {{rating.text}}
                                </p>
                            </li>
                        </ul>
                        <div class="no-rating" v-show="!food.ratings || !food.ratings.length">暂无评价</div>
                    </div>
                </div>
            </div>
        </div>
    </transition>
</template>

 <script type="text/ecmascript-6">
    import Vue from 'vue';
    import BScroll from 'better-scroll';
    import {formatDate} from '../../common/js/date.js';
    import cartcontrol from '../cartcontrol/cartcontrol.vue';
    import ratingselect from '../ratingselect/ratingselect.vue';
    import split from '../split/split.vue';

    const POSITIVE = 0;
    const NEGATIVE = 1;
    const ALL = 2;

    export default {
        props: {
            food: {
                type: Object
            }
        },
        data() {
            return {
                showFlag: false,
                selectType: ALL,
                onlyContent: true,
                desc: {
                    all: '全部',
                    positive: '推荐',
                    negative: '吐槽'
                }
            }
        },
        methods: {
            show() {
                this.showFlag = true;
                this.selectType = ALL;
                this.onlyContent = false;
                this.$nextTick (() => {
                      if (!this.scroll) {   
                        this.scroll = new BScroll(this.$refs.food, {
                            click: true
                        })
                        console.log(this.scroll)
                    } else {
                        // 重新计算
                        this.scroll.refresh();
                    }
                });
             },
             hide() {
                this.showFlag = false;
             },
             addFirst(event) {
                if(!event._constructed) {
                    return;
                }
                Vue.set(this.food,'count',1)
             },
             needShow(type,text) {
                 if (this.onlyContent && !text) {
                    return false;
                 }
                 if (this.selectType ===ALL){
                     return true;
                 } else {
                     return type === this.selectType;
                 }
             }
        },
        events: {
            'ratingtype.select'(type) {
                this.selectType = type;
                this.$nextTick(() => {
                    this.scroll.refresh();
                });
            },
            'content.toggle'(onlyContent) {
                this.onlyContent = onlyContent;
                this.$nextTick(() => {
                    this.scroll.refresh();
                });
            }
        },
        filters: {
            formatDate(time) {
                let date = new Date(time);
                return formatDate(date,'yyyy-MM-dd hh:mm');
            }
        },//日期格式化 过滤
        components: {
            cartcontrol,
            split,
            ratingselect
        }
    };
</script>

<style lang="stylus" rel="stylesheet/stylus">
    @import "../../common/stylus/mixin"
    .food 
        position: fixed
        left: 0
        top: 0
        bottom: 48px
        z-index: 30
        width: 100%
        background: #fff
        transition: all 0.2s        
        &.move-enter-active,&.move-leave-active
            transform : translate3d(100%,0,0)
        .image-header
            position: relative
            width:100%
            height: 0
            padding-top: 100%
            img
                position: absolute
                top: 0
                left 0
                width: 100%
                height: 100%
            .back
                position: absolute
                top: 10px
                left: 0
                .icon-arrow_lift
                    display: block
                    width: 30px
                    height: 30px
                    text-align: center
                    border-radius: 50%
                    background: #ddd
                    font-size: 28px
                    color: #fff
        .content
            position: relative
            padding: 18px
            .title 
                line-height: 14px
                margin-bottom: 8px
                font-size: 14px
                font-weight: 700
                color: rgb(7,17,27)
            .detail
                margin-bottom: 18px
                line-height: 10px
                height: 10px
                font-size: 0
                .sell-count,.rating
                    font-size: 10px
                    color: rgb(147,153,159)
                .sell-count
                    margin-right: 12px
            .price
                font-weight: 700
                line-height: 24px
                .now
                    margin-right: 8px
                    font-size: 14px
                    color: rgb(240,20,20)
                .old
                    text-decoration:line-through
                    font-size: 10px
                    color: rgb(147,153,159)
            .cartcontrol-wrapper
                position: absolute
                right: 12px
                bottom: 12px
            .buy
                position: absolute
                right: 18px
                bottom: 18px
                z-index: 10
                height: 24px
                line-height: 24px
                padding: 0 12px
                box-sizing: border-box
                border-radius : 12px
                font-size: 10px
                color: #fff
                background: rgb(0,160,220)
                transition: all 0.2s
                &.fade-enter-active,&.fade-leave-active
                    opacity: 0
        .info
            padding: 18px
            .title
                line-height: 14px
                margin-bottom: 6px
                font-size: 14px
                color: rgb(7,17,27)
            .text
                line-height: 24px
                padding: 0 8px
                font-size: 12px
                color: rgb(77,85,93)
        .rating
            padding-top: 18px
            .title
                line-height: 14px
                margin-left: 18px
                font-size: 14px
                color: rgb(7,17,27)
            .rating-wrapper
                padding: 0 18px
                .rating-item
                    position: relative
                    padding: 16px 0
                    border-1px(rgba(7,17,27,0.1))
                    .user
                        position: absolute
                        right: 0
                        top: 16px
                        line-height: 12px
                        font-size: 0
                        .name  
                            display: inline-block
                            margin-right: 6px
                            vertical-align: top
                            font-size: 10px
                            color: rgb(147,153,159)
                        .avatar
                            border-radius: 50%
                    .time
                        margin-bottom: 6px
                        line-height: 12px
                        font-size: 10px
                        color: rgb(147,153,159)
                    .text
                        line-height: 16px
                        font-size: 12px
                        color: rgb(7,17,27)
                .no-rating
                    padding: 16px 0
                    font-size: 12px
                    color: rgb(147,153,159)



</style>